Oogenesis is the process by which eggs are produced in the ovary, the process starts in the fetus when oogonia lining the germinal epithelium divide to form primary oocytes.the germinal epithelium also divides to form follicle cells. Which surround the primary oocytes forming primary follicles. So at birth , a baby girl will already have about a million primary follicles . the primary oocytes will have started to divide by meiosis, but the process stops at prophase I

FSH follicle stimulation hormone , and that hormone is secreted by the pituitary gland in the brain and its carried in the blood to the ovary, where it stimulates the development of one or more Graafian follicles

I hope that I helped but I don’t know what is the answer for the other part of your question